Simple Pendulum Experiment Worksheet

Science experiments lesson 23: Simple pendulum timing · Set 61 · 40 questions

What you do (Only the length matters): 1. Tie the nut to the string and hang it from the taped pencil, 30 cm long. 2. Pull it a little to one side and let go — do not push. 3. Time 10 swings and divide by 10. 4. Change only the string length (60 cm), time 10 swings again, and stand back from the bob.

1. 1.🧺 Do we need a mirror for the pendulum? (a) not needed (b) needed
2. 2.🛟 Why should you stand back from a swinging pendulum? (a) it is magnetic (b) it is hot (c) the bob could hit you (d) it is wet
3. 3.🧺 Which of these is needed for the pendulum? (a) a string (b) a battery cell (c) a magnet (d) yeast
4. 4.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “time for 10 swings”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.🕰️ Why do we time 10 swings and divide, instead of timing just one? (a) it is more accurate (b) it is more fun (c) one swing is too slow (d) 10 is a lucky number
6. 6.🛟 What is a safe bob for a home pendulum? (a) a sharp tool (b) a glass bottle (c) a small nut or washer (d) a heavy brick
7. 7.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the same hook”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🧺 Which of these is needed for the pendulum? (a) a magnet (b) a mirror (c) a balloon (d) a heavy nut or washer
9. 9.🧺 Which of these is needed for the pendulum? (a) yeast (b) turmeric powder (c) a mirror (d) a stopwatch
10. 10.🔮 Predict: you make the string shorter. The swings get ___. (a) slower (b) heavier (c) stopped (d) quicker
11. 11.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: how far we pull it back is kept the same. (a) True (b) False
12. 12.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a heavy nut or washer (b) a stopwatch (c) a ruler (d) a magnet
13. 13.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is what we measure? (a) the string length (b) the weight of the bob (c) the same hook (d) time for 10 swings
14. 14.True or false: turmeric powder is needed for the pendulum. (a) True (b) False
15. 15.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) time for 10 swings (b) how far we pull it back (c) the string length
16. 16.🔮 A heavier child sits on the same park swing. What happens to the swing time? (a) about the same (b) much faster (c) it cannot swing (d) much slower
17. 17.🧺 Do we need a battery cell for the pendulum? (a) not needed (b) needed
18. 18.🧺 Do we need a balloon for the pendulum? (a) needed (b) not needed
19. 19.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 57 seconds?
20. 20.⚖️ Fair test — does a longer string make the pendulum swing more slowly? What do we do with “the weight of the bob”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.🕰️ Which change makes a pendulum swing more slowly? (a) a shorter string (b) a longer string (c) a heavier bob (d) a lighter bob
22. 22.🔮 Predict: you make the string 4 times as long. How does the swing time change? (a) it halves (b) it becomes 4 times (c) it doubles (d) it stays the same
23. 23.🧺 Do we need turmeric powder for the pendulum? (a) not needed (b) needed
24. 24.🕰️ A pendulum makes 10 swings in 20 seconds. How many seconds does one swing take?
25. 25.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a pencil and tape (b) a string (c) a ruler (d) turmeric powder
26. 26.🕰️ Which old clock uses a pendulum to keep time? (a) a sundial (b) a phone (c) a digital watch (d) a grandfather clock
27. 27.🕰️ A pendulum makes 5 swings in 10 seconds. How many seconds does one swing take?
28. 28.🧺 Which of these is not needed for the pendulum? (a) a stopwatch (b) a ruler (c) a string (d) a magnet
29. 29.🕰️ A pendulum makes 20 swings in 20 seconds. How many seconds does one swing take?
30. 30.🧺 Do we need yeast for the pendulum? (a) needed (b) not needed
31. 31.🕰️ A pendulum takes 3 seconds for one swing. How many swings does it make in 42 seconds?
32. 32.🧺 Do we need a stopwatch for the pendulum? (a) not needed (b) needed
33. 33.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: the same hook is kept the same. (a) True (b) False
34. 34.⚖️ Fair test — does a longer string make the pendulum swing more slowly? Which of these is kept the same? (a) the string length (b) time for 10 swings (c) the same hook
35. 35.🕰️ A pendulum takes 1 second for one swing. How many swings does it make in 9 seconds?
36. 36.🧺 Three of these are needed for the pendulum. Which one is NOT needed? (a) a mirror (b) a pencil and tape (c) a string (d) a heavy nut or washer
37. 37.True or false: a magnet is not needed for the pendulum. (a) True (b) False
38. 38.True or false: turmeric powder is not needed for the pendulum. (a) False (b) True
39. 39.🧺 Which of these is not needed for the pendulum? (a) a string (b) a pencil and tape (c) a battery cell (d) a stopwatch
40. 40.⚖️ Fair test — does a longer string make the pendulum swing more slowly? True or false: time for 10 swings is the one thing we change. (a) True (b) False

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